Stabilized solutions of platinum (ii) antitumor agents
CA 2128641 A1 · Owner: Bogardus, Joseph B. · Inventors: Stenberg, Scott R.; Perrone, Robert K.; Bogardus, Joseph B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Solutions of carboplatin and other malonato platinum(II) antitumor agents are prepared containing stabilizing amounts of 1,1-cyclobutanedicarboxylic acid or salt at pH 4-8. The stabilizers inhibit unacceptable discoloration and precipitation. The solutions may also be stabilized by purging the carrier with air or oxygen and optionally, blanketing the headspace with air or oxygen.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.